US20060141177A1 - Process for producing pipe sleeves from mineral wool - Google Patents
Process for producing pipe sleeves from mineral wool Download PDFInfo
- Publication number
- US20060141177A1 US20060141177A1 US10/553,188 US55318805A US2006141177A1 US 20060141177 A1 US20060141177 A1 US 20060141177A1 US 55318805 A US55318805 A US 55318805A US 2006141177 A1 US2006141177 A1 US 2006141177A1
- Authority
- US
- United States
- Prior art keywords
- pipe sleeve
- reinforcing layer
- nonwoven web
- wound
- pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B1/00—Layered products having a general shape other than plane
- B32B1/08—Tubular products
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
- B32B37/16—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating
- B32B37/22—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating involving the assembly of both discrete and continuous layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/56—Winding and joining, e.g. winding spirally
- B29C53/562—Winding and joining, e.g. winding spirally spirally
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B19/00—Layered products comprising a layer of natural mineral fibres or particles, e.g. asbestos, mica
- B32B19/02—Layered products comprising a layer of natural mineral fibres or particles, e.g. asbestos, mica the layer of fibres or particles being impregnated or embedded in a plastic substance
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
- B32B5/022—Non-woven fabric
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
- F16L59/021—Shape or form of insulating materials, with or without coverings integral with the insulating materials comprising a single piece or sleeve, e.g. split sleeve, two half sleeves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/14—Arrangements for the insulation of pipes or pipe systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C31/00—Handling, e.g. feeding of the material to be shaped, storage of plastics material before moulding; Automation, i.e. automated handling lines in plastics processing plants, e.g. using manipulators or robots
- B29C31/002—Handling tubes, e.g. transferring between shaping stations, loading on mandrels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
- B29C67/24—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 characterised by the choice of material
- B29C67/242—Moulding mineral aggregates bonded with resin, e.g. resin concrete
- B29C67/245—Moulding mineral aggregates bonded with resin, e.g. resin concrete for making articles of indefinite length
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/22—Tubes or pipes, i.e. rigid
- B29L2023/225—Insulated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/10—Properties of the layers or laminate having particular acoustical properties
- B32B2307/102—Insulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/304—Insulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2597/00—Tubular articles, e.g. hoses, pipes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Laminated Bodies (AREA)
- Thermal Insulation (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Moulding By Coating Moulds (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Pipe Accessories (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Glass Compositions (AREA)
- Pretreatment Of Seeds And Plants (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
Description
- The invention relates to a process for producing pipe sleeves from mineral wool according to the preamble of
claim 1, and also to pipe sleeves which contain a wound nonwoven web made of mineral wool with a cured binder. - Pipe sleeves of this type are frequently used to insulate pipelines in order to minimise energy losses, for example in heating and service-water lines. The insulating layer of such pipe sleeves is generally produced by winding a nonwoven web made of mineral wool onto a mandrel of a winder and, as explained in DE 35 36 174 C1, can have an additional external lamination of a thin metal sheet. By means of this lamination, which is usually a thin aluminium sheet, an improvement in the compressive strength of the pipe sleeve, in particular in the radial direction, is conventionally achieved. Furthermore, the metal lamination also provides a trickle guard against any loose fibrous material possibly present in the pipe sleeve.
- Such conventional pipe sleeves for insulating pipelines have been tried and tested, but, in particular, the process step of applying the metal lamination entailing a relatively great deal of effort and being relatively expensive. If, on the other hand, the metal lamination is dispensed with, then this is associated with the problem of a possibly increased accumulation of dust and, and the same time, a worsened feel and strength of the pipe sleeve.
- In a further area of application, pipe sleeves of this type are also used to reduce the sound level in pipeline systems, for example of heating installations (chimney systems) or ventilation systems. Here, it is in particular a matter of largely nullifying the sound energy of the gases flowing through, by the sound waves being reflected and absorbed in a suitable manner. To this end, the pipes and pipe systems carrying gas are provided in the region of the pipe sleeve with normally empirically defined apertures, through which the gas can expand into the space between the pipe and an external housing. Since this space is filled with a packing of mineral wool, the gas oscillations and therefore also the sound waves are damped effectively.
- The sound-level-reducing effect is of course maintained only as long as the mineral wool filling is present and substantially fills the space allocated to it completely. Since, however, mineral wool consists of a large number of fibres bonded to one another by means of binders, this inner bond can be dissolved, in particular in the case of mechanical action or else by the gas stream, so that individual fibres can migrate out of the bond. This should be prevented with regard to a decrease in the sound-level reduction, but also because the fibre fragments must not be expelled with the gases, in order to avoid an uncontrollable contamination and pollution of the environment and, ultimately, also risks to health.
- One example of such a pipe sleeve is explained in DE 31 44 193 A1. This known pipe sleeve has an insulating layer of mineral wool, which is formed by a nonwoven web which, in the manner conventional in the production of pipe sleeves, has been wound over a winding mandrel which, after the mineral fibre pipe sleeve has been removed, leaves behind a passage opening for the pipe. In order to protect the pipe sleeve and, in particular, the outer circumferential surface against mechanical damage and therefore to avoid fibre fracture or fibre discharge, this known pipe sleeve is also given a sheath of a woven glass fabric. This sheath also has a reduced diameter as compared with the insulating layer, so that the insulating layer is present in a somewhat compressed state within the sheath, which achieves securing of the position and also beneficial spring properties and improved mechanical integrity of the arrangement. This pipe sleeve has been tried and tested in practice; however, in order to produce this type of pipe sleeve, apart from the separate production steps for the components, in particular the mounting step for the insertion of the insulating layer into the sheath is also required, which is complicated and presents problems, in particular in the case of relatively large numbers.
- The invention is based on the object of indicating a process for producing pipe sleeves which can be carried out cost-effectively with little effort and, firstly, leads to pipe sleeves with improved mechanical properties and/or, secondly, to pipe sleeves with mechanical properties which are approximately constant as compared with conventional pipe sleeves but have lower bulk densities.
- From a process engineering point of view, this object is achieved by the features of
claim 1. This comprises the following steps: providing a nonwoven web made of mineral wool which is provided with an uncured binder, winding up the nonwoven web on a winding mandrel of a winder, curing the binder, at least one reinforcing layer being provided before the nonwoven web runs into the winder, in such a way that during the winding the said reinforcing layer becomes a constituent part of the pipe sleeve produced as a result. - Thus, according to the invention, it is possible to achieve an improvement in the mechanical properties, with an astonishingly low technological outlay and without having to interrupt the conventional production process and in particular the winding operation. In particular, the mechanical strength of the pipe sleeve may thus be improved, as a result of which the risk of fibre breakage, for example under external mechanical influences, can be reduced considerably. The procedure according to the invention is also suitable in particular for large-scale mass production, as a result of which pipe sleeves of this type can thus be produced more economically.
- Furthermore, as a result of introducing the reinforcing layer, specific control of the strength properties of the pipe sleeve to be produced becomes possible, so that appropriate adaptations with respect to the bulk density to different uses, etc., can be carried out in process engineering terms with particularly little effort, that is to say bulk density can be saved as a result of the reinforcing effect of the reinforcing layer or layers, in spite of maintaining the stability of the pipe sleeves.
- Advantageous developments of the process according to the invention form the subject-matter of the
dependent Claims 2 to 7. - Thus, the at least one reinforcing layer can be applied to the nonwoven web in such a way that it is wound up with the latter and, following winding, is present within the pipe sleeve. In this way, the mechanical properties of the pipe sleeve to be produced can be set specifically and improved without the external appearance standing out from the prior art. In addition to the stabilisation of the pipe sleeve, it is simultaneously also possible to achieve a reduction in the bulk density by means of suitable selection of the reinforcing material, so that a reduction in the overall weight of the pipe sleeve produced may be achieved. Furthermore, the addition of the reinforcing layer to the nonwoven web to be wound up can be carried out without difficulty, even on a large scale, so that great improvements with regard to the material properties can be achieved with only minimally increased effort on process engineering.
- In this case, it is of further advantage if the reinforcing layer comprises a plurality of separate strips, which are each placed on the nonwoven web and then wound up together with the latter. In this way, the input of the reinforcing material can be controlled in a manner which is particularly beneficial in terms of process engineering. These strips can be deposited without difficulty at a desired, predetermined point and in a desired relation to one another on the nonwoven web, which is normally brought up on a transport element, and are then automatically wound in together with the said nonwoven web.
- As an alternative or additionally to this, it is also possible to add the reinforcing layer to the trailing end of the nonwoven web in such a way that it comes to lie on the outside of the pipe sleeve with the effect of a lamination, as the last layer arranged over the entire circumference. Therefore, an external sheath or lamination can be provided, as already proposed in DE 35 36 174 C1 explained at the beginning or
DE 31 44 193 A1, but there can be arranged only with a considerable effort in terms of process engineering. According to the invention, this effort can now be reduced drastically, since the corresponding reinforcing layer is automatically wound around. Since the winding operation is usually likewise associated with a certain amount of compression of the mineral wool material, according to the invention, a certain prestress of the mineral wool material with respect to the sheath of reinforcing material can be produced to the same extent as in the prior art, so that beneficial spring-back properties and mechanical characteristics of the final product can be achieved. By means of the reinforcing layer wound around the outside of the pipe sleeve according to the invention, reliable trickle protection can be provided, a smoother surface also being produced as well. A pipe sleeve formed in this way may be handled more conveniently. Furthermore, a higher mechanical strength of the pipe sleeve can be achieved cost-effectively. - In a further alternative or supplementary configuration, the at least one reinforcing layer can be applied to the winding mandrel, before the nonwoven web is wound up, in such a way that it represents the internal surface of the pipe sleeve determining the clear internal diameter of the pipe sleeve. Configuring the pipe sleeve in this way is advantageous in particular in the use for a sound level reduction in pipeline systems, for example of heating installations or ventilation systems, so that the cohesion of the bonded mineral water fibres can be maintained reliably even under the action of a gas flowing through and, in particular, a type of trickle protection against the emergence into the pipeline system of particles possibly nevertheless loosened can be prevented reliably. In other words, the abrasion, that is to say fibre abrasion, at relatively high air or gas velocities is intended to be prevented thereby. The “internal lamination”, formed in this way, of the pipe sleeve may be provided in this case cost-effectively and with little effort on process engineering.
- It is particularly advantageous if a glass nonwoven, a woven glass fibre fabric, for example E-glass or the like, is used as reinforcing layer. These have proven to be advantageous in practical trials since, in addition to a comparatively low bulk density, they have good mechanical properties and can be wound together with the nonwoven web without difficulty.
- Furthermore, before being provided for the winding operation, the reinforcing layer can be wetted with additional binder, by which means, following the curing of the binder, an improved bond in the moulding produced in this way can be achieved. This additional binder can for example simply be sprayed onto the reinforcing layer supplied, with particularly little effort on process engineering.
- According to a further aspect of the present invention a pipe sleeve made of mineral wool as defined in claim 8 is provided, which is produced by means of a process according to any of
claims 1 to 7. Such pipe sleeve shows the advantageous effects as mentioned above with regard to the method claims. - In particular, according to claim 9, a pipe sleeve made of mineral wool is provided for insulating pipelines, which is formed of a wound nonwoven web with cured binder and in which there is at least one reinforcing layer on the inner side of the pipe and/or enclosed at at least part of the boundary between successive wound layers.
- Preferably, the at least one reinforcing layer is enclosed within the wound layers. This can therefore serve as a type of “reinforcement” within the pipe sleeve, which means that the mechanical strength of the pipe sleeve can be improved. However, it is particularly advantageous to use these improved mechanical properties to reduce the bulk density of the pipe sleeve and thus to reduce the production costs. The pipe sleeve according to the invention is thus distinguished by an excellent ratio of volumetric weight to mechanical strength, being capable of production cost-effectively to a great extent and on a large scale.
- In this case, the reinforcing layer can comprise a plurality of separate strips, which means that the mechanical properties of the pipe sleeve can be set specifically. In particular, a suitable balance between a reduction in bulk density and an improvement in the mechanical strength can be produced in this way.
- In another embodiment, as defined in
claim 12, a reinforcing layer may be provided in the form of a trickle guard being wound circumferential around the pipe sleeve. In this way, an improved surface can be produced on the circumferential surface of the pipe sleeve, which permits the pipe sleeve to be reinforced with respect to external mechanical influences. Therefore, the risk of fibre breakage in the event of improper handling, etc. can be reduced substantially, so that discharge of fibre can be avoided to the greatest possible extent. In addition, this sheath, serving as a type of “lamination”, of reinforcing material suppresses the discharge of fibre to a substantial extent and is felt to be more pleasant and smoother during handling. This makes it easier to handle the pipe sleeve according to the invention, for example during installation. As compared with a thin metal sheet which, because of its stiffness, can automatically be supplied exactly, this is not possible with glass nonwovens serving as a trickle guard, because of their deficient inherent stability, for which reason the process according to the invention constitutes a simple and effective possible way of doing this. - According to a further aspect of the invention, as defined in
claim 13, a pipe sleeve made of mineral wool is provided for sound-level reduction in pipeline systems, in particular of low-temperature heating installations (flue installations) or ventilation systems, the pipe sleeve being formed from a wound nonwoven web with cured binder and having at least one reinforcing layer, which provides the inner surface of the pipe sleeve, determining the clear internal diameter of the pipe sleeve. Therefore, the expansion space required for the damping of gas oscillations or sound waves continues to be available in the pipe sleeve and, at the same time, a type of trickle protection against particles which may have been loosened is provided. In practical trials, this configuration has proven to be suitable in particular for absorbing pressure peaks in the gas flow, such as normally occur in heating or ventilation installations primarily during start-up, since part of the combustion noise is transported to the outside via the waste gas path. In particular, the requirements on the prevention of noise in building constructions, which are laid down in DIN 4109 and Technical Note Noise can therefore be met. - The reinforcing layer used is preferably a glass nonwoven, a woven glass fibre fabric of E-glass or the like, which exhibit the advantages already explained.
- Moreover, the reinforcing layer may include particulate material, such as infrared radiation absorbing material or heat shielding material in order to improve the properties of the pipe sleeve according to the invention.
- Further, the reinforcing layer may include a foil material, such as a heat reflective foil containing a metal like aluminum.
- The reinforcing layer may be treated with a biocide agent.
- Moreover, the reinforcing layer may be provided with means for allowing separation of wound layers in order to reduce external or internal diameter of the pipe.
- The invention will be explained in more detail in exemplary embodiments, using the Figures of the drawing, in which:
-
FIG. 1 shows a schematic view of a winder adapted according to the invention; -
FIG. 2 shows a front view of a pipe sleeve according to a first embodiment produced by means of the winder according toFIG. 1 ; -
FIG. 3 shows a front view of a second embodiment of a pipe sleeve according to the invention; -
FIG. 4 shows the details of the supply belt of the winder during the production of the second embodiment of a pipe sleeve; -
FIG. 5 shows a front view of a pipe sleeve in a third embodiment; and -
FIG. 6 shows an exemplary application in a heating installation. -
FIG. 1 shows, highly schematically, a side view of awinder 1, on which a pipe sleeve 10 (cf.FIG. 2 ) according to a first embodiment is produced. Thewinder 1 has a windingmandrel 2, onto which anonwoven web 11 made of mineral wool, supplied by afirst supply belt 3, is wound in an intrinsically conventional manner. - In the illustration shown, the
nonwoven web 11 has already been substantially wound on the windingmandrel 2, an inner reinforcinglayer 12 having been placed on the windingmandrel 2 before the start of the winding operation and, in this way, in the course of the winding operation, becoming an integral constituent part of the pipe sleeve 10 to be produced. - In addition to this, the
winder 1 contains a second supply belt 4, by means of which an outer reinforcinglayer 13 can be supplied in such a way that its leading end overlaps the trailing end section of thenonwoven web 11 such that it is also wound into the coil. As a result of the further rotation of the windingmandrel 2, the reinforcinglayer 13 is ultimately led around the entire periphery of the existing coil, and its trailing end overlaps its leading end in a manner that can be seen schematically fromFIG. 2 . The reinforcinglayer 13 therefore comes to lie completely circumferentially around the coil and forms an outer sheath or lamination around the latter. - In a following curing step, the binder in the moulding formed in this way is cured and the latter thus becomes the pipe sleeve 10, from which the winding
mandrel 2 is then withdrawn, so that ultimately the pipe sleeve 10 is present in the shape that can be seen fromFIG. 2 . - FIGS. 3 to 5 show a modified embodiment of the invention, in which the reinforcing layer is introduced in the form of strips in the course of the winding operation. Thus,
FIG. 3 shows a front view of apipe sleeve 20 according to a second embodiment of the invention. In this, a reinforcinglayer 22 is also wound in inside anonwoven web 21. For this purpose, in the manner that can be seen fromFIG. 4 , the reinforcinglayer 22 is placed on thenonwoven web 21 supplied to thewinder 1 by thefirst supply belt 3. -
FIG. 5 shows a third embodiment, according to which apipe sleeve 30 has two integrated reinforcinglayers nonwoven web 31. These have been placed on thenonwoven web 31 separately from one another at specific times before the winding operation. - The
pipe sleeves FIG. 6 . In this schematic illustration, aheating installation 40 has aheating block 41, a waste-gas pipe 42 and aflue 43, it being possible for the waste gases from the low-temperature heating installation, formed for example as an oil or gas heating system, to be led to theflue 43 via the waste-gas pipe 42. - Interposed in the waste-
gas pipe 42 is a sound-level-reducing device 44 comprising ahousing 45, which encloses apipe sleeve 50 according to a fourth embodiment but which corresponds to the pipe sleeve 10 with the exception of an outer reinforcinglayer 13 which may possibly be present. - The
pipe sleeve 50 contains awound nonwoven layer 51 and also an inner reinforcinglayer 52, which provides the inner surface determining the clear internal diameter of thepipe sleeve 50. This inner reinforcinglayer 52 is formed from an E-glass nonwoven and therefore has apertures through which the gas stream can expand into thewound nonwoven layer 51. Therefore, the pressure peaks occurring in particular during start-up of theheating installation 40 can be dissipated in the device 44, reducing the sound level. At the same time, the reinforcinglayer 52 to the greatest extent prevents discharge of particles loosened by the action of the flow into the waste-gas pipe 42 or theflue 43. As a further protection against the flowing waste gases, it is possible for a fine-mesh wire basket to be arranged in the inside of thehousing 45, in front of the reinforcinglayer 52. - The invention permits further approaches to configuration in addition to the embodiments indicated.
- For example, the reinforcing layer can also be provided in such a length and projecting both beyond the leading and beyond the trailing end of the nonwoven web in such a way that, in the course of the winding operation, both the reinforcing layer forming the inner surface of the pipe sleeve and the reinforcing layer integrated within the wound layers, and the reinforcing layer forming the outer sheath, are provided from one piece.
- Furthermore, it is not absolutely necessary for the leading end of the reinforcing
layer 13 to overlap the trailing end of thenonwoven web 11 in the manner shown inFIG. 1 ; instead, the reinforcinglayer 13 can also be introduced into the winding operation immediately following thenonwoven web 11. The reinforcinglayer 13 can, furthermore, also be supplied to thenonwoven web 11 from below. - The inner reinforcing
layer mandrel 2 separately in advance; alternatively, it is also possible that this is likewise supplied by supply belts and wound around the windingmandrel 2 in a conventional way, the winding of thenonwoven web - The length and width dimensions of the respective reinforcing layers in all the exemplary embodiments are selected in accordance with the desired properties of the final product, so that, for example, a reinforcing layer can also be designed to be sufficiently long that it overlaps itself more or less considerably in the coil. However, the width of each reinforcing layer is preferably selected such that it corresponds to the width of the respective nonwoven web, in order in this way to permit the advantageous properties also to come into effect uniformly over the entire product.
- Also, the reinforcing layer may include particulate material such as infrared radiation absorbing material. As disclosed in WO 02/092528, a suitable IR absorbing and scattering material absorbs and scatters infrared radiation with a wavelength in the 4 to 40 μm range. Preferably, the IR absorbing and scattering material absorbs 6-8 μm (1667-1250 cm−1) infrared radiation. The IR absorbing and scattering material can include borate compounds, carbonate compounds, alumina compounds, nitrate compounds and nitrite compounds. These compounds can be alkali metal salts or alkaline earth metal salts. Borate compounds, carbonate compounds and alumina compounds are preferred. Suitable borates include lithium borate, sodium borate, potassium borate, magnesium borate, calcium borate, strontium borate and barium borate. Preferably, the borate is sodium borate (i.e., borax, Na2B4O5(OH)4.8H2O or Na2B4O7.10H2O) or colemanite (Ca2B6O11.5H2O). Suitable carbonates include lithium carbonate, sodium carbonate, potassium carbonate, calcium carbonate (i.e., calcite, CaCO3), dolomite (CaMg(CO3)2), magnesium carbonate (i.e., magnesite, MgCO3), strontium carbonate and barium carbonate. Preferably, the carbonate is calcium carbonate, dolomite, or magnesite. Suitable alumina compounds include hydrated alumina (Al2O3.3H2O or Al(OH)3) and alumina (Al2O3). ALCOA produces HYDRAL and B-303 particles of hydrated alumina.
- Moreover, the reinforcing layer may include particulate material such as heat shielding material. Heat shielding material can be selected among phosphorous compounds, such as alkaline-earth phosphate especially a calcium phosphate.
- Calcium phosphates, especially the orthophosphate (Ca3(PO4)2) and the pyrophosphate (Ca2P2O7), are known to be refractory and these compounds have melting points of 1670° C. and 1230° C., respectively. The phosphorus compound may also be a compound chosen from the following compounds:
- ammonium salts, ammonium phosphates, especially ammonium hydrogen phosphate (called AHP), ammonium dihydrogen phosphate (called ADP) and polyphosphates (especially of the metaphosphate and pyrophosphate types).
- These ammonium salts may be pure or may include organic radicals;
- phosphoric acid in its various forms, especially orthophosphoric acid (H3PO4), metaphosphoric acid and polyphosphoric acid ([HPO3]);
- aluminum hydrogenophosphates, especially aluminum hydrogen phosphate or aluminum dihydrogen phosphate, by themselves or mixed with orthophosphoric acid.
Claims (18)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10317937 | 2003-04-17 | ||
DE10117937.2 | 2003-04-17 | ||
DE10317937A DE10317937A1 (en) | 2003-04-17 | 2003-04-17 | Process for the production of pipe shells made of mineral wool and such pipe shells |
PCT/EP2004/003918 WO2004091910A1 (en) | 2003-04-17 | 2004-04-14 | Process for producing pipe sleeves from mineral wool |
Publications (2)
Publication Number | Publication Date |
---|---|
US20060141177A1 true US20060141177A1 (en) | 2006-06-29 |
US7740922B2 US7740922B2 (en) | 2010-06-22 |
Family
ID=33103514
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/553,188 Expired - Fee Related US7740922B2 (en) | 2003-04-17 | 2004-04-14 | Process for producing pipe sleeves from mineral wool |
Country Status (17)
Country | Link |
---|---|
US (1) | US7740922B2 (en) |
EP (1) | EP1617996B1 (en) |
JP (1) | JP4560037B2 (en) |
KR (1) | KR101085959B1 (en) |
CN (1) | CN100542804C (en) |
AT (1) | ATE364502T1 (en) |
AU (1) | AU2004230224B2 (en) |
BR (1) | BRPI0409438B1 (en) |
CA (1) | CA2522981A1 (en) |
DE (2) | DE10317937A1 (en) |
DK (1) | DK1617996T3 (en) |
ES (1) | ES2288256T3 (en) |
NO (1) | NO338456B1 (en) |
PL (1) | PL1617996T3 (en) |
RU (1) | RU2335690C2 (en) |
UA (1) | UA85052C2 (en) |
WO (1) | WO2004091910A1 (en) |
Cited By (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080156681A1 (en) * | 2005-05-04 | 2008-07-03 | Saint-Gobain Isover | Packaging Unit for Pipe Sections |
US20110290365A1 (en) * | 2008-05-23 | 2011-12-01 | Gorm Rosenberg | Pipe section and methods for its production |
US20130263508A1 (en) * | 2010-06-30 | 2013-10-10 | Jean Marie Wilhelmus Cuypers | Growth Substrate Product, Methods of Growing Plants and Processes of Making Growth Substrate |
US8940089B2 (en) | 2007-08-03 | 2015-01-27 | Knauf Insulation Sprl | Binders |
US9040652B2 (en) | 2005-07-26 | 2015-05-26 | Knauf Insulation, Llc | Binders and materials made therewith |
US9309436B2 (en) | 2007-04-13 | 2016-04-12 | Knauf Insulation, Inc. | Composite maillard-resole binders |
US9416248B2 (en) | 2009-08-07 | 2016-08-16 | Knauf Insulation, Inc. | Molasses binder |
US9447281B2 (en) | 2007-01-25 | 2016-09-20 | Knauf Insulation Sprl | Composite wood board |
US9493603B2 (en) | 2010-05-07 | 2016-11-15 | Knauf Insulation Sprl | Carbohydrate binders and materials made therewith |
US9492943B2 (en) | 2012-08-17 | 2016-11-15 | Knauf Insulation Sprl | Wood board and process for its production |
US9505883B2 (en) | 2010-05-07 | 2016-11-29 | Knauf Insulation Sprl | Carbohydrate polyamine binders and materials made therewith |
US9828287B2 (en) | 2007-01-25 | 2017-11-28 | Knauf Insulation, Inc. | Binders and materials made therewith |
US10287462B2 (en) | 2012-04-05 | 2019-05-14 | Knauf Insulation, Inc. | Binders and associated products |
US10508172B2 (en) | 2012-12-05 | 2019-12-17 | Knauf Insulation, Inc. | Binder |
US10767050B2 (en) | 2011-05-07 | 2020-09-08 | Knauf Insulation, Inc. | Liquid high solids binder composition |
US10864653B2 (en) | 2015-10-09 | 2020-12-15 | Knauf Insulation Sprl | Wood particle boards |
US10968629B2 (en) | 2007-01-25 | 2021-04-06 | Knauf Insulation, Inc. | Mineral fibre board |
US11060276B2 (en) | 2016-06-09 | 2021-07-13 | Knauf Insulation Sprl | Binders |
US11248108B2 (en) | 2017-01-31 | 2022-02-15 | Knauf Insulation Sprl | Binder compositions and uses thereof |
US11332577B2 (en) | 2014-05-20 | 2022-05-17 | Knauf Insulation Sprl | Binders |
US11401204B2 (en) | 2014-02-07 | 2022-08-02 | Knauf Insulation, Inc. | Uncured articles with improved shelf-life |
US11846097B2 (en) | 2010-06-07 | 2023-12-19 | Knauf Insulation, Inc. | Fiber products having temperature control additives |
US11939460B2 (en) | 2018-03-27 | 2024-03-26 | Knauf Insulation, Inc. | Binder compositions and uses thereof |
US11945979B2 (en) | 2018-03-27 | 2024-04-02 | Knauf Insulation, Inc. | Composite products |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007033794A1 (en) | 2007-07-19 | 2009-01-22 | Saint-Gobain Isover G+H Ag | Method for producing a pipe shell made of mineral wool by a winding process as well as pipe shell produced therewith |
US20100078259A1 (en) * | 2008-09-30 | 2010-04-01 | Honeywell International Inc. | Flowbodies and methods of forming flowbodies |
WO2011037578A1 (en) * | 2009-09-25 | 2011-03-31 | Hewlett-Packard Development Company, L.P. | Heat transfer systems and methods |
FI20115323L (en) * | 2011-04-04 | 2012-10-05 | Paroc Oy Ab | Apparatus and method for forming mineral wool pipe insulation gutters |
JP5921008B2 (en) * | 2012-10-31 | 2016-05-24 | 日本たばこ産業株式会社 | Paper tube manufacturing machine and manufacturing method thereof |
DE102013019682A1 (en) * | 2013-11-22 | 2015-05-28 | Saint-Gobain Isover G+H Ag | Insulating element for heat and / or sound insulation of pipes, especially chimney pipes |
DE202013009857U1 (en) | 2013-12-06 | 2014-02-06 | Saint-Gobain Isover G+H Ag | Insulation element for line element for ventilation pipes and thus insulated pipe element |
EP3323605B1 (en) * | 2016-11-18 | 2020-03-18 | Heraeus Electro-Nite International N.V. | Convolute tube |
DE202019103492U1 (en) | 2019-06-24 | 2019-07-01 | Klaus-Dieter Nies | High temperature insulation for thermal insulation of pipes |
DE102021110571A1 (en) | 2021-04-26 | 2022-10-27 | Leonhard Kurz Stiftung & Co. Kg | Insulation material, method of manufacturing an insulation material and method of recycling an insulation material |
US11739880B2 (en) | 2021-05-19 | 2023-08-29 | Samuel Gottfried | High temperature protection wrap for plastic pipes and pipe appliances |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3346016A (en) * | 1964-01-02 | 1967-10-10 | Johns Manville | High temperature thermal insulation |
US3824140A (en) * | 1971-06-11 | 1974-07-16 | Linde Ag | Method of insulating ducts |
US4576206A (en) * | 1981-07-06 | 1986-03-18 | Lauren Henning J E | Pipe insulation sleeve |
US4687530A (en) * | 1985-10-10 | 1987-08-18 | Isover Saint-Gobain "Les Miroirs" | Method of and apparatus for lining a pipe insulating shell consisting of mineral fibers with a foil |
US5056564A (en) * | 1988-02-19 | 1991-10-15 | Isover Saint-Gobain | Insulating mat for bodies of which at least portions of the surface are curved, and in particular for pipes, and the use of such a mat |
US5457136A (en) * | 1994-08-10 | 1995-10-10 | Armstrong World Industries, Inc. | Thermal foam insulation |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1696019C3 (en) * | 1967-03-13 | 1974-02-28 | Baldwin-Ehret-Hill, Inc., Trenton, N.J. (V.St.A.) | Machine for the production of a pipe casing |
JPS51129926A (en) * | 1975-05-06 | 1976-11-11 | Nippon Kokan Kk <Nkk> | Process for preventing corrosive of steel pipe |
DE2847508A1 (en) * | 1978-11-02 | 1980-05-14 | Wilfried Seitz | MINERAL WOOL INSULATION |
JPS62894Y2 (en) * | 1979-02-13 | 1987-01-10 | ||
JPS57128570A (en) | 1981-02-03 | 1982-08-10 | Canon Inc | Printer |
DE3144193A1 (en) * | 1981-11-06 | 1983-05-19 | Grünzweig + Hartmann und Glasfaser AG, 6700 Ludwigshafen | Sound-absorbing body, in particular for installation in silencers |
DE3205185C2 (en) * | 1982-02-13 | 1985-12-12 | Wilfried 6238 Hofheim Seitz | Method for producing a silencer filling for a muffler as well as silencer filling produced according to this method |
JPS6487336A (en) * | 1987-09-30 | 1989-03-31 | Oyo Kikaku Kk | Forming processor of spiral plastic pipe |
JPH0911374A (en) | 1995-06-27 | 1997-01-14 | Asahi Fiber Glass Co Ltd | Fiber aggregate and heat-insulating sound-absorbing material |
DE19746091A1 (en) * | 1997-10-17 | 1999-04-22 | Linde Ag | Multilayered vacuum insulation for pipe or other container |
-
2003
- 2003-04-17 DE DE10317937A patent/DE10317937A1/en not_active Withdrawn
-
2004
- 2004-04-14 RU RU2005130955/04A patent/RU2335690C2/en active
- 2004-04-14 CN CNB2004800103479A patent/CN100542804C/en not_active Expired - Fee Related
- 2004-04-14 DK DK04727285T patent/DK1617996T3/en active
- 2004-04-14 UA UAA200509693A patent/UA85052C2/en unknown
- 2004-04-14 ES ES04727285T patent/ES2288256T3/en not_active Expired - Lifetime
- 2004-04-14 US US10/553,188 patent/US7740922B2/en not_active Expired - Fee Related
- 2004-04-14 AT AT04727285T patent/ATE364502T1/en active
- 2004-04-14 DE DE602004006986T patent/DE602004006986T2/en not_active Expired - Lifetime
- 2004-04-14 WO PCT/EP2004/003918 patent/WO2004091910A1/en active IP Right Grant
- 2004-04-14 BR BRPI0409438-7A patent/BRPI0409438B1/en not_active IP Right Cessation
- 2004-04-14 AU AU2004230224A patent/AU2004230224B2/en not_active Ceased
- 2004-04-14 PL PL04727285T patent/PL1617996T3/en unknown
- 2004-04-14 CA CA002522981A patent/CA2522981A1/en not_active Abandoned
- 2004-04-14 JP JP2006505119A patent/JP4560037B2/en not_active Expired - Fee Related
- 2004-04-14 KR KR1020057019522A patent/KR101085959B1/en not_active IP Right Cessation
- 2004-04-14 EP EP04727285A patent/EP1617996B1/en not_active Expired - Lifetime
-
2005
- 2005-11-17 NO NO20055453A patent/NO338456B1/en not_active IP Right Cessation
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3346016A (en) * | 1964-01-02 | 1967-10-10 | Johns Manville | High temperature thermal insulation |
US3824140A (en) * | 1971-06-11 | 1974-07-16 | Linde Ag | Method of insulating ducts |
US4576206A (en) * | 1981-07-06 | 1986-03-18 | Lauren Henning J E | Pipe insulation sleeve |
US4687530A (en) * | 1985-10-10 | 1987-08-18 | Isover Saint-Gobain "Les Miroirs" | Method of and apparatus for lining a pipe insulating shell consisting of mineral fibers with a foil |
US5056564A (en) * | 1988-02-19 | 1991-10-15 | Isover Saint-Gobain | Insulating mat for bodies of which at least portions of the surface are curved, and in particular for pipes, and the use of such a mat |
US5457136A (en) * | 1994-08-10 | 1995-10-10 | Armstrong World Industries, Inc. | Thermal foam insulation |
Cited By (51)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110162991A1 (en) * | 2005-05-04 | 2011-07-07 | Saint-Gobain Isover | Packaging unit for pipe sections |
US20080156681A1 (en) * | 2005-05-04 | 2008-07-03 | Saint-Gobain Isover | Packaging Unit for Pipe Sections |
US8196744B2 (en) | 2005-05-04 | 2012-06-12 | Saint-Gobain Isover | Packaging unit for pipe sections |
US9260627B2 (en) | 2005-07-26 | 2016-02-16 | Knauf Insulation, Inc. | Binders and materials made therewith |
US9926464B2 (en) | 2005-07-26 | 2018-03-27 | Knauf Insulation, Inc. | Binders and materials made therewith |
US9745489B2 (en) | 2005-07-26 | 2017-08-29 | Knauf Insulation, Inc. | Binders and materials made therewith |
US9464207B2 (en) | 2005-07-26 | 2016-10-11 | Knauf Insulation, Inc. | Binders and materials made therewith |
US9040652B2 (en) | 2005-07-26 | 2015-05-26 | Knauf Insulation, Llc | Binders and materials made therewith |
US9434854B2 (en) | 2005-07-26 | 2016-09-06 | Knauf Insulation, Inc. | Binders and materials made therewith |
US11401209B2 (en) | 2007-01-25 | 2022-08-02 | Knauf Insulation, Inc. | Binders and materials made therewith |
US10000639B2 (en) | 2007-01-25 | 2018-06-19 | Knauf Insulation Sprl | Composite wood board |
US10968629B2 (en) | 2007-01-25 | 2021-04-06 | Knauf Insulation, Inc. | Mineral fibre board |
US11905206B2 (en) | 2007-01-25 | 2024-02-20 | Knauf Insulation, Inc. | Binders and materials made therewith |
US9447281B2 (en) | 2007-01-25 | 2016-09-20 | Knauf Insulation Sprl | Composite wood board |
US11453780B2 (en) | 2007-01-25 | 2022-09-27 | Knauf Insulation, Inc. | Composite wood board |
US9828287B2 (en) | 2007-01-25 | 2017-11-28 | Knauf Insulation, Inc. | Binders and materials made therewith |
US11459754B2 (en) | 2007-01-25 | 2022-10-04 | Knauf Insulation, Inc. | Mineral fibre board |
US10759695B2 (en) | 2007-01-25 | 2020-09-01 | Knauf Insulation, Inc. | Binders and materials made therewith |
US9309436B2 (en) | 2007-04-13 | 2016-04-12 | Knauf Insulation, Inc. | Composite maillard-resole binders |
US11946582B2 (en) | 2007-08-03 | 2024-04-02 | Knauf Insulation, Inc. | Binders |
US8940089B2 (en) | 2007-08-03 | 2015-01-27 | Knauf Insulation Sprl | Binders |
US9469747B2 (en) | 2007-08-03 | 2016-10-18 | Knauf Insulation Sprl | Mineral wool insulation |
US8979994B2 (en) | 2007-08-03 | 2015-03-17 | Knauf Insulation Sprl | Binders |
US9039827B2 (en) | 2007-08-03 | 2015-05-26 | Knauf Insulation, Llc | Binders |
US20110290365A1 (en) * | 2008-05-23 | 2011-12-01 | Gorm Rosenberg | Pipe section and methods for its production |
US10053558B2 (en) | 2009-08-07 | 2018-08-21 | Knauf Insulation, Inc. | Molasses binder |
US9416248B2 (en) | 2009-08-07 | 2016-08-16 | Knauf Insulation, Inc. | Molasses binder |
US9505883B2 (en) | 2010-05-07 | 2016-11-29 | Knauf Insulation Sprl | Carbohydrate polyamine binders and materials made therewith |
US10738160B2 (en) | 2010-05-07 | 2020-08-11 | Knauf Insulation Sprl | Carbohydrate polyamine binders and materials made therewith |
US11814481B2 (en) | 2010-05-07 | 2023-11-14 | Knauf Insulation, Inc. | Carbohydrate polyamine binders and materials made therewith |
US10913760B2 (en) | 2010-05-07 | 2021-02-09 | Knauf Insulation, Inc. | Carbohydrate binders and materials made therewith |
US9493603B2 (en) | 2010-05-07 | 2016-11-15 | Knauf Insulation Sprl | Carbohydrate binders and materials made therewith |
US11078332B2 (en) | 2010-05-07 | 2021-08-03 | Knauf Insulation, Inc. | Carbohydrate polyamine binders and materials made therewith |
US11846097B2 (en) | 2010-06-07 | 2023-12-19 | Knauf Insulation, Inc. | Fiber products having temperature control additives |
US20130263508A1 (en) * | 2010-06-30 | 2013-10-10 | Jean Marie Wilhelmus Cuypers | Growth Substrate Product, Methods of Growing Plants and Processes of Making Growth Substrate |
US10767050B2 (en) | 2011-05-07 | 2020-09-08 | Knauf Insulation, Inc. | Liquid high solids binder composition |
US10287462B2 (en) | 2012-04-05 | 2019-05-14 | Knauf Insulation, Inc. | Binders and associated products |
US11725124B2 (en) | 2012-04-05 | 2023-08-15 | Knauf Insulation, Inc. | Binders and associated products |
US11453807B2 (en) | 2012-04-05 | 2022-09-27 | Knauf Insulation, Inc. | Binders and associated products |
US9492943B2 (en) | 2012-08-17 | 2016-11-15 | Knauf Insulation Sprl | Wood board and process for its production |
US10183416B2 (en) | 2012-08-17 | 2019-01-22 | Knauf Insulation, Inc. | Wood board and process for its production |
US11384203B2 (en) | 2012-12-05 | 2022-07-12 | Knauf Insulation, Inc. | Binder |
US10508172B2 (en) | 2012-12-05 | 2019-12-17 | Knauf Insulation, Inc. | Binder |
US11401204B2 (en) | 2014-02-07 | 2022-08-02 | Knauf Insulation, Inc. | Uncured articles with improved shelf-life |
US11332577B2 (en) | 2014-05-20 | 2022-05-17 | Knauf Insulation Sprl | Binders |
US10864653B2 (en) | 2015-10-09 | 2020-12-15 | Knauf Insulation Sprl | Wood particle boards |
US11230031B2 (en) | 2015-10-09 | 2022-01-25 | Knauf Insulation Sprl | Wood particle boards |
US11060276B2 (en) | 2016-06-09 | 2021-07-13 | Knauf Insulation Sprl | Binders |
US11248108B2 (en) | 2017-01-31 | 2022-02-15 | Knauf Insulation Sprl | Binder compositions and uses thereof |
US11939460B2 (en) | 2018-03-27 | 2024-03-26 | Knauf Insulation, Inc. | Binder compositions and uses thereof |
US11945979B2 (en) | 2018-03-27 | 2024-04-02 | Knauf Insulation, Inc. | Composite products |
Also Published As
Publication number | Publication date |
---|---|
BRPI0409438A (en) | 2006-04-18 |
NO20055453L (en) | 2005-11-17 |
NO20055453D0 (en) | 2005-11-17 |
UA85052C2 (en) | 2008-12-25 |
RU2005130955A (en) | 2006-05-10 |
DE10317937A1 (en) | 2004-11-04 |
DE602004006986T2 (en) | 2008-02-21 |
KR20060010747A (en) | 2006-02-02 |
CN1774340A (en) | 2006-05-17 |
DE602004006986D1 (en) | 2007-07-26 |
ES2288256T3 (en) | 2008-01-01 |
ATE364502T1 (en) | 2007-07-15 |
JP4560037B2 (en) | 2010-10-13 |
AU2004230224B2 (en) | 2010-02-04 |
PL1617996T3 (en) | 2007-10-31 |
KR101085959B1 (en) | 2011-11-22 |
BRPI0409438B1 (en) | 2014-10-07 |
US7740922B2 (en) | 2010-06-22 |
DK1617996T3 (en) | 2007-10-08 |
EP1617996B1 (en) | 2007-06-13 |
WO2004091910A1 (en) | 2004-10-28 |
CA2522981A1 (en) | 2004-10-28 |
AU2004230224A1 (en) | 2004-10-28 |
NO338456B1 (en) | 2016-08-15 |
RU2335690C2 (en) | 2008-10-10 |
JP2006525885A (en) | 2006-11-16 |
EP1617996A1 (en) | 2006-01-25 |
CN100542804C (en) | 2009-09-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7740922B2 (en) | Process for producing pipe sleeves from mineral wool | |
EP0692616B1 (en) | Preformed sound-absorbing material for engine exhaust muffler | |
FI67616B (en) | VAERMEISOLERINGSFODERPRODUKT FOER LEDNING | |
CA2669370C (en) | Wall leadthrough for leading a line through a building wall | |
US6319444B1 (en) | Molded insulation products and their manufacture using continuous-filament wool | |
EP1687561B1 (en) | Insulation system for technical installations | |
JPH11324642A (en) | Filling member for muffler and its forming method | |
US20080233333A1 (en) | Fibrous products having reduced formaldehyde emissions | |
JP2766246B2 (en) | Fire prevention measures at the section penetration and fire protection measures at the section penetration using the fire prevention measures | |
HUT75222A (en) | Insulating mat comprising a mineral fibre layer | |
EP1444408B2 (en) | Layered mineral fibre element and its method of manufacture | |
EA012148B1 (en) | Insulating element for heat-insulating and sound-proofing a pipe section having an expanded outer diameter | |
JP3591538B2 (en) | Air duct pipe | |
RU173453U1 (en) | THERMAL INSULATION PRODUCT FOR PIPES | |
JP2002514529A (en) | Laminate | |
Desech et al. | Composite Panel for Insulating Car Engine | |
CN117662865A (en) | Nondestructive assembly structure of smoke-proof air duct and assembly method thereof | |
RU2211394C2 (en) | Pipe | |
JPH0241207A (en) | Manufacture of refractory tube joint |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: SAINT-GOBAIN ISOVER,FRANCE Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:LIGTENBERG, HARALD;ZYSIK, ANTON;MEYER, JENS;AND OTHERS;REEL/FRAME:016964/0984 Effective date: 20051014 Owner name: SAINT-GOBAIN ISOVER, FRANCE Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:LIGTENBERG, HARALD;ZYSIK, ANTON;MEYER, JENS;AND OTHERS;REEL/FRAME:016964/0984 Effective date: 20051014 |
|
REFU | Refund |
Free format text: REFUND - PAYMENT OF MAINTENANCE FEE, 4TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: R1551); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
FPAY | Fee payment |
Year of fee payment: 4 |
|
FEPP | Fee payment procedure |
Free format text: MAINTENANCE FEE REMINDER MAILED (ORIGINAL EVENT CODE: REM.) |
|
LAPS | Lapse for failure to pay maintenance fees |
Free format text: PATENT EXPIRED FOR FAILURE TO PAY MAINTENANCE FEES (ORIGINAL EVENT CODE: EXP.) |
|
STCH | Information on status: patent discontinuation |
Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
|
FP | Lapsed due to failure to pay maintenance fee |
Effective date: 20180622 |